A nurse is caring for a client who is 1 day postoperative following an open thoracotomy. The client is receiving oxygen mist at 40% by face tent. The client's SPO2 is 89-96%. ABG results are: pH 7.31, PaO2 93 mm Hg, PCO2 5O mm Hg, HCO3 25 mEq/L. Which of the following is an appropriate action by the nurse?

Position the client prone and have the respiratory therapist perform postural drainage.

Place the client in high-Fowler's position and encourage the use of incentive spirometer and coughing.

Increase oxygen to 70%.

Switch oxygen to a nonrebreather mask.

Answer and Explanation

The Correct Answer is B

A. Prone positioning and postural drainage are typically not appropriate interventions for a client 1 day postoperative following an open thoracotomy, as this could place stress on the incision site and cause discomfort or injury.

B. High-Fowler's position facilitates lung expansion, which can improve ventilation and oxygenation. Encouraging the use of an incentive spirometer and promoting coughing helps clear secretions and expand the lungs, addressing the mild respiratory acidosis indicated by the ABG results (pH 7.31 and PaCO2 50 mm Hg).

C. Increasing oxygen to 70% is not appropriate, as the PaO2 level is within normal limits (93 mm Hg). The client's issue appears to be related more to ventilation (indicated by the elevated PaCO2) rather than oxygenation, so additional oxygen would not address the underlying cause and could lead to oxygen toxicity if used long-term.

D. A nonrebreather mask delivers a high concentration of oxygen, which is not necessary in this case since the client’s PaO2 is already adequate. The primary issue is not a lack of oxygen but rather the retention of CO2, so promoting ventilation and lung expansion through positioning and respiratory exercises is more appropriate.

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Correct Answer is B

Explanation

A. Metabolic acidosis:

Metabolic acidosis is characterized by a low pH (<7.35) and a low bicarbonate level (<22 mEq/L) due to an excess of acids in the body or a loss of bicarbonate. However, in the given ABG values, the pH is low (7.22), but the bicarbonate level is elevated (28 mEq/L), which does not align with metabolic acidosis. Therefore, metabolic acidosis is not the correct interpretation in this case.

B. Respiratory acidosis:

Respiratory acidosis occurs when there is inadequate removal of carbon dioxide (CO2) by the lungs, leading to an accumulation of CO2 in the blood and a decrease in pH. In the ABG values provided, the pH is low (7.22), and the PaCO2 is elevated (68 mm Hg), indicating respiratory acidosis as the primary disturbance. This interpretation is supported by the elevated PaCO2 and the low pH, making it the correct choice based on the given data.

C. Respiratory alkalosis:

Respiratory alkalosis results from hyperventilation, leading to excessive elimination of CO2 and a decrease in PaCO2 levels. However, in the ABG values presented, the PaCO2 is elevated (68 mm Hg), which contradicts the expected decrease seen in respiratory alkalosis. Therefore, respiratory alkalosis is not the correct interpretation of the ABG values in this case.

D. Metabolic alkalosis:

Metabolic alkalosis is characterized by a high pH (>7.45) and a high bicarbonate level (>26 mEq/L) due to excessive loss of acids or an increase in bicarbonate levels. However, in the ABG values provided, the pH is low (7.22), and the bicarbonate level is elevated (28 mEq/L), which is not consistent with metabolic alkalosis. Therefore, metabolic alkalosis is not the correct interpretation based on the given data.

A. Elevated hemoglobin B. Decreased protein level C. Low bone density D. Increased muscle mass

Correct Answer is B

Explanation

A. Elevated hemoglobin:

Elevated hemoglobin levels are not typically associated with aging or factors that affect pressure injury healing. Hemoglobin levels primarily relate to blood oxygen-carrying capacity and are influenced by factors such as hydration status, kidney function, and certain medical conditions.

B. Decreased protein level:

This is a significant factor that can impact the ability of a pressure injury to heal in older adults. Decreased protein levels, specifically serum albumin and total protein, are common in aging individuals and can contribute to impaired wound healing. Protein is essential for tissue repair, collagen synthesis, and immune function.

C. Low bone density:

While low bone density (osteoporosis) is a concern in aging adults and can increase the risk of fractures, it is not directly related to the ability of a pressure injury to heal. However, bone density can indirectly impact wound healing if fractures or bone-related complications occur.

D. Increased muscle mass:

Increased muscle mass is generally beneficial for overall health and functional abilities in older adults. However, it is not directly related to the ability of a pressure injury to heal.

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Naxlex Comprehensive Predictor Exams

Correct Answer is B

Explanation

A nurse is caring for a 70-year-old client who has a pressure injury in the coccyx area. The nurse identifies that which of the following factors associated with aging may impact the ability for the ulcer to heat?

Correct Answer is B

Explanation

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